I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
scudo scud scudi scad scot scut scute scuta squid scoot squad scout sacked sucked sicked socked segued skidoo sukkot scottie sickout skiddoo scat sect skid
scudo cud cued kudo scud scudi